CCNA 3 and 4 Companion Guide (Cisco Networking Academy Program), 3rd Edition. Table of Contents. I. REVIEW. 1. Review: The OSI Reference Model and Routing. Layered Network Model: OSI Reference Model. Peer- to- Peer Communication. Data Encapsulation. Physical Layer. Ethernet/8. Physical Connections. Data Link Layer. Ethernet/8.
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Interface. Network Layer. IP Addressing and Subnets. Path Determination. Path Communication. ICMP. ARP. Routing. Routed Versus Routing Protocols. IP Routing Configuration Tasks. Transport Layer. Segmenting Upper- Layer Applications. Establishing a Connection. Data Transfer. Reliability with Windowing. Acknowledgment Techniques. Summary. Key Terms. Check Your Understanding. II. CCNA 3: SWITCHING BASICS AND INTERMEDIATE ROUTING. Introduction to Classless Routing. CIDR Overview. Why CIDR? Route Aggregation and Supernetting. Supernetting and Address Allocation. Variable- Length Subnet Masking (VLSM). VLSM Features. Calculating VLSMs. Configuring VLSM. VLSM Using RIP and IGRP. Route Summarization. Summarization Within an Octet. Summarization with a Discontiguous Network. Route Flapping. RIP Version 2. Short History of RIP. RIP Version 2 Features. Comparing RIPv. RIPv. 2. Configuring RIP Version 2. Verifying RIP V2. Troubleshooting RIP. Default Routes. Summary. Key Terms. Check Your Understanding. Single- Area OSPF. Single- Area OSPF Concepts. OSPF Overview. OSPF Terminology. OSPF States. Comparing OSPF with Distance Vector Routing Protocols. Shortest Path First Algorithm. OSPF Network Types.
OSPF Hello Protocol. Steps in OSPF Operations. Establishing a Router Adjacency. Electing a DR and BDR. Discovering Routes. Selecting the Best Route. Maintaining Route Information. Single- Area OSPF Configuration. Configuring a Loopback Address. Modifying OSPF Router Priority. Modifying OSPF Cost Metric. Configuring OSPF Authentication. Configuring OSPF Timers. Configure OSPF over NBMA. Full- Mesh Frame Relay. Partial- Mesh Frame Relay. Point- to- Multipoint OSPF. Propagating a Default Route. Common OSPF Configuration Issues. Verifying the OSPF Configuration. Summary. Key Terms. Check Your Understanding. Enhanced Interior Gateway Routing Protocol. EIGRP Overview. EIGRP Processes and Technology. EIGRP Benefits. Independence from Routed Protocols. EIGRP Terminology. Neighbor Table. Topology Table. Successor. Feasible Successor. Selection of Successors and Feasible Successors. Stuck in Active Routes. Routing Table. Route Tagging. EIGRP Features and Technologies. Neighbor Discovery and Recovery. Reliable Transport Protocol. DUAL Finite- State Machine. PDMs. EIGRP Packet Types. Hello Packets. Acknowledgment Packets. Update Packets. Query and Reply Packets. EIGRP Convergence. Configuring EIGRP. Configuring EIGRP for IP. Configuring Bandwidth with NBMA. Configuring Bandwidth over a Multipoint Network. Configuring Bandwidth over a Hybrid Multipoint Network. Using the ip bandwidth- percent Command. Configuring EIGRP Summarization. Summary. Key Terms. Check Your Understanding.
Switching Concepts and LAN Design. Ethernet/8. LANs. Ethernet/8. LAN Development. Factors That Impact Network Performance. Elements of Ethernet/8. Networks. Half- Duplex Ethernet Networks. Full- Duplex Ethernet Networks. Introduction to LAN Switching. LAN Segmentation. LAN Segmentation with Bridges. LAN Segmentation with Routers. LAN Segmentation with Switches. The Basic Operations of a Switch. Ethernet Switch Latency. Layer 2 and Layer 3 Switching. Implications of Layer 2 and Layer 3 Switching. Symmetric and Asymmetric Switching. Memory Buffering. LAN Design. LAN Design Goals. LAN Design Considerations. Function and Placement of Servers. Segmentation Issues. Broadcast Domain Issues. LAN Design Methodology. Factors That Affect Network Availability. Designing the Physical Network Topology. Layer 1 Design. Layer 2 Design. Layer 3 Design. Basic Layer 2 Bridging and Switching. How Switches and Bridges Filter Frames. Filtering Types. Summary. Key Terms. Check Your Understanding. Switches. Overview of Switches. Starting the Switch. Physical Startup of the Catalyst Switch. Switch LED Indicators. Verifying Port LEDs During Switch POST. Viewing Initial Bootup Output from the Switch. Examining Help in the Switch Command- Line Interface. LAN Switches and Hierarchical Network Design. The Core Layer. The Distribution Layer. Access Layer. Switched LANs, Access Layer Overview. Access Layer Switches. Distribution Layer Overview. Distribution Layer Switches. Core Layer Overview. Core Layer Switches. Summary. Key Terms. Check Your Understanding. Switch Configuration. Microsegmentation. Microsegmentation Implementation. How a Switch Learns Addresses. Switch Forwarding. Store- and- Forward. Cut- Through. Symmetric Switching. Asymmetric Switching. Memory Buffering. Switches and Collision Domains. Switches and Broadcast Domains. Communication Between Switches and PCs. PC to Switch Transmission. Communication Between Switches. Verifying the Initial Configuration of a Catalyst Switch. Verifying the Catalyst Switch Default Configuration. Switch Port Properties. VLAN Properties. The Flash Directory. Displaying IOS Version Information. Benefits of Using the Default Configuration. Configuring the Network Settings of the Catalyst Switch. Resetting the Switch Defaults. Assigning the Switch Host Name and Passwords. Assigning the Switch IP Address and Default Gateway. Setting Port Characteristics. Web- Based Interface. Managing the MAC Address Table. Configuring Static MAC Addresses. Configuring Port Security. Executing Adds, Moves, and Changes. Managing Switch Operating System Images and Device Configuration Files. 1.
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Password Recovery. 1. Firmware IOS Upgrade. Summary. Key Terms. Check Your Understanding. Spanning Tree Protocol. Redundant Topology Overview. What Is Redundancy? Redundant Topologies. Redundant Switched Topologies. Broadcast Storms. Multiple Frame Transmissions. MAC Database Instability. Spanning Tree Overview. Spanning- Tree Operation. Using Spanning Tree to Create a Loop- Free Topology. Advanced Functions of STP. Selecting the Root Bridge. Stages of Spanning- Tree Port States. Electing Designated Ports. Path Cost. STP Timers. Spanning- Tree Recalculation. Convergence. RSTP. RSTP Port States. Transition to Forwarding. Summary. Key Terms. Check Your Understanding.
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Virtual LANs. VLAN Introduction. Broadcast Domains with VLANs and Routers. VLAN Operation. End- to- End VLANs. Geographic VLANS. Benefits of VLANs. Change Management. VLANs and Security. Using Hubs with VLANs. VLAN Types. VLAN Frame Identification. IEEE 8. Q: Frame Tagging. Inter- Switch Link Protocol. FDDI 8. LANE. VLAN Configuration. Configuring Static VLANs. Verifying VLAN Configuration. Saving a VLAN Configuration. Deleting a VLAN Configuration. Troubleshooting VLANs. Summary. Key Terms. Check Your Understanding. VLAN Trunking Protocol. Trunking. Trunking Concepts. Trunking Operation. VLANs and Trunking. Switch Command- Line Interfaces. Trunking Implementation. VLAN Trunking Protocol (VTP). History of VTP. VTP Concepts. VTP Benefits. VTP Domain. VTP Modes. VTP Implementation. VTP Configuration. VTP Pruning. Inter- VLAN Routing. Inter- VLAN Issues and Solutions. Isolated Broadcast Domains. Finding the Route Between VLANs. Physical and Logical Interfaces. Dividing Physical Interfaces into Subinterfaces. Configuring Inter- VLAN Routing. Summary. Key Terms. Check Your Understanding.
III. CCNA 4: WAN TECHNOLOGIES. Scaling IP Addresses. Internet Protocol Overview. NAT and PAT. NAT and PAT Features. Configuring NAT and PAT. Verifying NAT and PAT Configuration. Troubleshooting NAT and PAT Configuration. Advantages and Disadvantages of NAT. DHCP Overview. Introducing DHCP. BOOTP and DHCP Differences. DHCP Features. DHCP Operation. Configuring DHCP Operation. Verifying DHCP Operation. Troubleshooting DHCP Configuration. DHCP Relay. Summary. Key Terms. Check Your Understanding.
WAN Technologies. WAN Technologies Overview. WAN Devices. WAN Standards. WAN Encapsulation. WAN Link Options. Circuit- Switched Connections. Packet- Switched Connections. Packet and Circuit Switching. WAN Technologies. Analog Dialup. ISDN. Leased Line. X. Frame Relay. ATM. DSL. Cable Modem. WAN Communication. LAN/WAN Integration. Identifying and Selecting Network Capabilities. Identifying and Selecting a Networking Model. The Hierarchical Network Design Model. The Three- Layer Design Models. Three- Layer Model Components. Hierarchical WAN Design Advantages. Server Placement. WAN Design. Steps in Designing a WAN. Gathering Requirements. Analyzing Requirements. Sensitivity Testing. WAN Topology. How to Identify and Select Networking Capabilities. Other WAN Design Considerations. Summary. Key Terms. Check Your Understanding.